That came as a bit of a surprise. Not least because, when it emerged a press conference was being called at the First Minister’s Bute House residence, I asked one of his senior aides if there would be a big announcement.

For the first time ever in this country the referendum on Scottish independence gives 16 and 17-year-olds the chance to vote. Helen Brown talked to Halima Kolo, who appears in this Sunday’s BBC Scotland documentary about being 16 in 2014.